新人教版高中英语必修第一册：Discovering Useful Structures——限制性定语从句(2).pptx

Discovering Useful Structures—— 限制性定语从句(2);;1.It was a time when people were divided geographically. 2.Emperor Qinshihuang united the seven major states into one unified country where the Chinese writing system began to develop in one direction. 3.There are many reasons why this has been possible, but one of the main factors has been the Chinese writing system. 4.These were animal bones and shells on which symbols were carved by ancient Chinese people. 5.It was in 1952 and Mandela was the black lawyer to whom I went for advice.;一、关系副词引导的定语从句 当先行词在定语从句中作状语，即定语从句不缺主语、宾语或者表语时，通常要用关系副词引导定语从句。常用的关系副词有where，when，why等。关系副词的指代及功能如下：;1.关系副词where;[名师点津]　当先行词为situation, case, stage, point, activity, atmosphere等抽象名词，且引导词在定语从句中表示事情发生的情况、阶段等时，常用关系副词where引导。 They have reached the point where they have to separate with each other. 他们已经到了必须分手的地步。;2.关系副词when;3.关系副词why;[即时练1]　用适当的关系词填空 ①I still remember the days ____________ we chatted with each other all night. ②I still remember the days ____________ we spent together on the farm. ③I don’t know the reason ____________ he dropped out of college. ④I won’t listen to the reason ____________ you have given us. ⑤This is the place ____________ we held a party last week. ⑥This is the place ____________ we visited last week.;二、“介词＋关系代词”引导的定语从句;二、“介词＋关系代词”引导的定语从句;1.介词的选用：可以遵循“一名二动三逻辑”的原则。;(2)“二动”——依据定语从句中动词或形容词等所需要的某种习惯搭配来确定。 He brought the result with which the boss was satisfied.(be satisfied with“对……满意”) 他带来了令老板满意的结果。 Yesterday we visited the West Lake for which Hangzhou is known.(be known for “因……而出名”) 昨天我们游览了西湖，杭州因其而出名。;(3)“三逻辑”——根据从句表达的意义和先行词的逻辑关系来确定。 This is the pilot by whom my son was saved. 这就是救了我儿子的那位飞行员。 The colorless gas without which we cannot live is called oxygen. 这种无色的、离开它我们就无法生存的气体叫作氧气。;[名师点津]　有些“动词＋介词”短语如look for，look after，call on等，如果介词提前将会失去动词短语的意义，所以不可把介词置于关系代词前。 Is this the brochure which she is looking for? 这就是她在找的那本册子吗？ The babies whom the nurses are looking after are healthy. 护士们在照看的婴儿都很健康。;2.“名词/数词/代词等＋介词of＋关系代词”